mingmwang commented on PR #5554:
URL:
https://github.com/apache/arrow-datafusion/pull/5554#issuecomment-1471902012
> I am essentially just running clickbench queries against my PR and against
main. The only change is I am setting RegionID column to a dict:
>
> ```
> CREATE EXTERNAL TABLE hits_base
> STORED AS PARQUET
> LOCATION 'hits.parquet';
> CREATE TABLE hits as
> select
> arrow_cast("RegionID", 'Dictionary(Int32, Utf8)') as "RegionID"
> ....
> ```
>
> Do you have any recommendations, @mingmwang ?
I had never check clickbench queries. Maybe you can comment the rule
`SingleDistinctToGroupBy` and run the benchmark again and see whether there are
improvements.
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